title: Reconstruction and Validation of the Depressive Experiences Questionnaire
abstract: The Depressive Experiences Questionnaire (DEQ) was constructed to assess two distinct characterological configurations associated with depression--the anaclitic (dependent) and introjective (self-critical). Although the DEQ is widely used as a measure of these two personality constructs, its validity in actually measuring them is questionable. In this study we subjected a correlation matrix comprised of DEQ responses from a large sample of normal adults (N = 404) to confirmatory factor analysis to assess formally whether the DEQ is congruent with the theoretical parameters outlined by the model. Results indicated that neither the two-factor (Dependency, Self-Criticism) nor the three-factor (Dependency, Self-Criticism, Efficacy) models represented good approximations of the data. Using a series of exploratory factor analyses, we identified 19 items (9 dependency, 10 self-critical) from the original DEQ that were an excellent fit to the data for the two-factor model from "normal" adult, depressed outpatient, and student samples. Parameter estimates of the relationship between the two factors indicated only a modest association. Test-retest reliabilities for both the Dependency and Self-Criticism scales indicated excellent temporal stability. There were diagnostically meaningful variations in the mean scores between the "normal" sample and patient sample.
authors.affiliation: Clarke Institute of Psychiatry, University of Toronto
authors.initials: RM
authors.lastname: Bagby
authors.initials: JDA
authors.lastname: Parker
authors.initials: RT
authors.lastname: Joffe
authors.initials: T
authors.lastname: Buis